// es6 module 一个文件可以有多个输出
// {} 普通输出，有多个输出口
// 默认输出，只有一个
import { Component } from 'react';
import styled, {createGlobalStyle} from 'styled-components';
import style from './assets/global-style'
// css in js
export const GlobalStyle = createGlobalStyle`
    html, body, div, span, applet, object, iframe,
    h1, h2, h3, h4, h5, h6, p, blockquote, pre,
    a, abbr, acronym, address, big, cite, code,
    del, dfn, em, img, ins, kbd, q, s, samp,
    small, strike, strong, sub, sup, tt, var,
    b, u, i, center,
    dl, dt, dd, ol, ul, li,
    fieldset, form, label, legend,
    table, caption, tbody, tfoot, thead, tr, th, td,
    article, aside, canvas, details, embed, 
    figure, figcaption, footer, header, hgroup, 
    menu, nav, output, ruby, section, summary,
    time, mark, audio, video {
        margin: 0;
        padding: 0;
        border: 0;
        font-size: 100%;
        font: inherit;
        vertical-align: baseline;
    }
    /* HTML5 display-role reset for older browsers */
    article, aside, details, figcaption, figure, 
    footer, header, hgroup, menu, nav, section {
        display: block;
    }
    body {
        line-height: 1;
    }
    html, body {
        background: #f2f3f4;;
    }
    ol, ul {
        list-style: none;
    }
    blockquote, q {
        quotes: none;
    }
    blockquote:before, blockquote:after,
    q:before, q:after {
        content: '';
        content: none;
    }
    table {
        border-collapse: collapse;
        border-spacing: 0;
    }
    a {
        text-decoration: none;
        color: #fff;
    }
`
// styled-Components 天生支持css 变量
// 全局的变量放到 asset/global-style
export const Tab = styled.div`
    height:44px;
    display:flex;
    justify-content:space-around;
    background:${style["theme-color"]};
    a{
        flex:1;
        padding:2px 0;
        font-size:14px;
        color:#e4e4e4;
        &.selected {
            span {
                padding:3px 0;
                font-weight:700;
                color:#f1f1f1;
                border-bottom:2px solid #f1f1f1;
            }
        }
    }
`

export const TabItem = styled.div`
    height:100%;
    display:flex;
    justify-content:center;
`
// export const wsq = 2
// const obj = {a:1}
// export default obj  // 默认输出 只能有一个